Imports github.com/go-gomail/gomail github.com/gogf/gf/frame/g github.com/gogf/gf/os/glog github.com/gogf/gf/os/gtime github.com/gogf/gf/util/gconv gopkg.in/dutchcoders/goftp.v1 Standard library imports bytes container/list crypto/md5 crypto/rand crypto/tls encoding/base64 encoding/hex encoding/json errors fmt hash/crc32 io math math/rand net net/smtp os reflect regexp sort strings time unsafe